All 1 Gerhard E. Ortner releases on Paperback Book
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![Cover for Gerhard E. Ortner · Medienverbund im Organisationsverbund (Paperback Book) [1983 edition] (1984)](https://imusic.b-cdn.net/images/item/original/680/9783810004680.jpg?gerhard-e-ortner-1984-medienverbund-im-organisationsverbund-paperback-book&class=scaled&v=1594355055)